CN106054381A - Conformal concave infrared optical system with deformable mirror - Google Patents
Conformal concave infrared optical system with deformable mirror Download PDFInfo
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- CN106054381A CN106054381A CN201610589974.7A CN201610589974A CN106054381A CN 106054381 A CN106054381 A CN 106054381A CN 201610589974 A CN201610589974 A CN 201610589974A CN 106054381 A CN106054381 A CN 106054381A
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- conformal
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- trousers
- optical system
- distorting lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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Abstract
The invention relates to a conformal concave infrared optical system with deformable mirror, which belongs to the technical field of optical instruments. The system contains a rotary and symmetrical non-spherical dome, an optical imaging system, an active optical element deforming mirror and a detector image face. The system adopts a special non-spherical dome that accords with hydrodynamic to achieve good hydrodynamic performances. Through the use of the active optical element deforming mirror, the asymmetric aberrations of the special non-spherical dome can be corrected and local concave images with high resolution can be formed on different visual fields. The system of the invention meets the performances of medium dynamics and has a simple structure; with reduced data transmission quantity of target image data, it can be widely used in the field of investigation and rescue.
Description
Technical field
The invention belongs to technical field of optical instrument, relate to a kind of containing powered optical element distorting lens and conformal trousers
Infrared little recessed optical system, be particularly well-suited to investigation and the rescue of target.
Background technology
Infrared imagery technique effect in the modern times investigate, rescue becomes increasingly conspicuous, and system is also towards volume miniaturization, flight
The trend development of speed high speed.The little recessed simulation of optical systems human eye little characteristic being recessed into picture, by introducing active optics unit
Part simplifies optical system and the details of target realizes local high resolution imaging, thus system imaging data volume is relatively fewer,
Convenient transmission, and make optical system smaller and more exquisite, light, be very suitable for Remote and other to image real time transfer and
In the application that transmission speed has higher requirements.As the front-end protection cover of little recessed optical system, replaced by conformal trousers and pass
The ball-type trousers of system, it is possible to reduce the aerodynamic drag that system is suffered during high-speed flight, promotes system whole
The aerodynamic performance of body.But while being introduced into conformal trousers lifting system air dynamic performance, it will can not keep away
The introducing non-axis symmetry off-axis aberration exempted from, produces impact to the image quality of little recessed optical system.Traditional optical correction method
Being that the non-axis symmetry aberration that conformal trousers is introduced by addition aspherical corrector plate is corrected, system is complex, and difficult
To realize the high-resolution function of dynamic local of little recessed optical system, therefore introduce powered optical element and correcting conformal trousers
The purpose of conformal little recessed optical system Regional High Resolution is realized while the nonaxisymmetrical aberration introduced.
The little patent being recessed into picture that presently, there are has two, and one is that the little of Patent No. 201410097429.7 is recessed into picture
Design of Optical System, it is not that powered optical element achieves simple partial enlargement effect by scanning lens group, sweeps
Retouching structure relatively complicated, system is complex.One is scanning containing locally super-resolution of Patent No. 201410193562.2
Little being recessed into image optical system, it carries out partial sweep super-resolution one-tenth by introducing transmission-type powered optical element spatial light modulator
Picture.But patent does not meet the conformal little recessed of the conformal trousers of aerodynamic rotational symmetric aspheric about introducing
Optical system and realize the little related work being recessed into picture by Non-scanning mode reflective powered optical element distorting lens.
The present invention devises a kind of conformal little recessed infrared optical system applying powered optical element distorting lens, with before
Two little recessed optical systems are different, and application band is infrared band, and system structure is simple, except conformal trousers and active optics
Quote outside deformed element mirror is spherical lens entirely, and sheet number is less.System F number is 2, and observation visual field can deform with requiring
The size of mirror is adjusted, and according to your existing distorting lens size, can reach 60 degree of observation visual fields in theory.
Summary of the invention
Present invention aim to address under conditions of the application conformal trousers of aspheric surface, optical system is carried out little being recessed into
The problem of picture.Propose a kind of conformal little recessed optical system applying powered optical element distorting lens.
It is an object of the invention to be achieved through the following technical solutions.
A kind of conformal infrared little recessed optical system containing powered optical element distorting lens of the present invention includes: rotationally symmetrical
The conformal trousers of aspheric surface (1), fixed lens group (2), powered optical element distorting lens (3) and detector image planes (4)；Front end is revolved
Turning the conformal trousers of symmetric aspheres and fixed lens group is perpendicular to optical axis, powered optical element distorting lens and optical axis are 45 °
Angle, light carries out imaging by distorting lens refraction in detector image planes.Detector image planes are parallel to horizontal optical axis.
Specific design method of the present invention is as follows:
1. use and meet the conformal trousers of aerodynamic rotational symmetric aspheric (1), become by powered optical element
Its asymmetric aberration introduced is corrected by shape mirror (3).While improving optical system aerodynamic performance, correct it
The dynamic error with optical axis change introduced.
2. in order to be able to simplify optical system, reduce optical system imaging image data amount, field of regard is realized local high
Differentiate, correct this visual field aberration by optical element distorting lens (3), visual field interested is carried out high-resolution imaging.
3. powered optical element distorting lens (3) is a kind of reflective optical element, in order to simultaneously real to field of view of interest
Show Regional High Resolution and be corrected by the asymmetric aberration that conformal trousers is introduced, through calculating, for making distorting lens school
Positive quantity reaches maximum, is put into by powered optical element distorting lens between emergent pupil and detector image planes (4), main by controlling
The face type of dynamic optical element distorting lens (3), the sufficiently calibration capability of application powered optical element distorting lens (3) so that target
View field imaging quality is close to diffraction limit.
By above method for designing, a kind of conformal infrared little recessed light containing powered optical element distorting lens of the present invention
System, the F number of system is 2.Horizontal field of view and 7.5 ° of visual fields to Conformal Optical System achieve little recessed detection.
The operation principle of the present invention: it is conformal whole that the infra-red radiation of infinity objective emission sequentially passes through rotational symmetric aspheric
Stream cover (1), fixed lens group (2), powered optical element distorting lens (3), finally in detector image planes (4) imaging.
Beneficial effect
The present invention has following remarkable advantage: present invention employs one and meets aerodynamic rotational symmetric aspheric altogether
Shape cowling design optical system, F number is 2.And employ a kind of powered optical element distorting lens to field of regard interested
Carry out Regional High Resolution, the asymmetric aberration that correction respective field of vision is introduced simultaneously by conformal trousers.Field of regard image quality
Close to diffraction limit.Reducing resistance of medium, improving while range of movement, making that optical system is simpler, volume compact, office
Portion's image quality is more good, decreases the volume of transmitted data of image.In observation field range, can pass through in theory
Control the face type change of powered optical element distorting lens, it is achieved the arbitrarily Regional High Resolution of visual field.It is particularly suitable for modern investigation, rescues
Help etc. in field.
Accompanying drawing explanation
Fig. 1 is horizontal field of view schematic diagram of the present invention；
Fig. 2 is 7.5 ° of visual field schematic diagrams of the present invention；
In figure, the conformal trousers of 1-rotational symmetric aspheric, 2-fixed lens group, 3-powered optical element distorting lens, 4-
Detector image planes.
Detailed description of the invention
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment will be as it is shown in figure 1, the present invention will be mainly used in conformal infrared little recessed optical system.Can be widely applied to
In the fields such as modern investigation, rescue.
As it is shown in figure 1, a kind of conformal infrared little recessed optical system containing powered optical element distorting lens of the present invention, comprise
The conformal trousers of rotational symmetric aspheric (1), fixed lens group (2), powered optical element distorting lens (3) and detector image planes
(4)；In the direction of propagation of light, conformal trousers and fixed lens group containing rotational symmetric aspheric are perpendicular to horizon light
Axle.And powered optical element distorting lens and optical axis are 45 ° of angles.Detector image planes are parallel to horizontal optical axis.Light first passes through
Comprise the conformal trousers (1) of rotational symmetric aspheric, compared with application ball cover, comprise the conformal trousers of rotational symmetric aspheric
Aerodynamic is more preferable, but can introduce more aberration.Then light passes through fixed lens group (2), in general, in order to correct
The aberration introduced by comprising the conformal trousers of rotational symmetric aspheric, all can select aspheric surface to be corrected just obtaining to it
Reasonable effect, but if introducing aspheric surface, the complexity of system can be increased, increase the volume of optical system, originally set
Fixed lens group simple in construction in meter, number of lenses is few, applies the simple eyeglass of two panels as fixed lens group, not
Fixing lens will be given due to the correction tasks of the application introduced asymmetric aberration of the conformal trousers Han rotational symmetric aspheric
Group is corrected, but gives, aberration correction task, the powered optical element distorting lens (3) that light will pass through, and distorting lens is not only
Carry and correct the task of comprising the introduced asymmetric aberration of the conformal trousers of rotational symmetric aspheric due to application, also undertake
Specific visual field being carried out Regional High Resolution, reducing image data amount of task.Distorting lens can be by the control of certain way
Realize the change of face type, thus complete the correction to non-axis symmetry aberration and the realization of Regional High Resolution, in optical design,
It is described in the face of the change of distoring mirror type by ZERNIKE.Light after powered optical element modification mirror corrects
Finally in detector image planes (4), carry out imaging.Owing to the wave band of application is LONG WAVE INFRARED, so select is non-brake method long wave
Infrared Detectors, does not embody refrigeration diaphragm in design.
In embodiment, the infra-red radiation of infinity objective emission is irradiated to detector after sequentially passing through above each optical element
On element, obtain last picture.
In embodiment, the conformal trousers of rotational symmetric aspheric (1) is the aspheric surface having rotation axes of symmetry, fixed lens group
(2) for converging beam, conversion powered optical element distorting lens (3) is used for realizing Conformal Optical System Regional High Resolution.
In embodiment, lens design parameter is as shown in table 1, and different visual fields ZERNIKE coefficient is as shown in table 2.
In embodiment, the conformal trousers of aspheric surface of employing meets principle of hydrodynamics, uses powered optical element to become
Shape mirror realizes local field of view high-resolution and visual field aberration correction:
1., while reducing resistance of medium, improving range of movement, use easier light path to containing rotationally symmetrical non-
The optical aberration of the conformal trousers of sphere is corrected, and optical system is relatively simple, and except containing rotationally symmetrical non-
The conformal trousers of sphere and be used for aberration correction and realize the reflective powered optical element distorting lens of Regional High Resolution
Outward, whole optical system do not contain aspheric surface.
2., in method for designing, in order to reach distorting lens correction maximum, by calculating, distorting lens is put into optical system
Near exit pupil position, realize Regional High Resolution by the minute surface of conversion powered optical element distorting lens, in optical software, pass through
The ZERNIKE coefficient changing mirror surface type carrys out the surface deformation of distorting lens in simulating actual conditions.Image is reduced with this
As data volume, and region interested is realized Regional High Resolution, facilitate data to be rapidly performed by transmission in a large number.
3. system F number is 2, mainly undertakes optical aberration correction tasks due to fixed lens group, but by becoming
Shape mirror is corrected.So, optical system volume is the compactest, and system simplicity is the most loaded down with trivial details.
Table 1 (unit: mm)
Table 2
| Zernike exponent number | Horizontal field of view | 7.5 ° of visual fields |
| 1 | -1.86331670 | -3.91422916 |
| 2 | 0.04479271 | 0.00876244 |
| 3 | 0.00045672 | 0.06746824 |
| 4 | 0.00289354 | 0.91428645 |
| 5 | -0.85497878 | -0.48990162 |
| 6 | -0.01067422 | -0.02292396 |
| 7 | -0.01532028 | -0.31237822 |
| 8 | -0.04656916 | 0.10351296 |
| 9 | -0.53167217 | -0.41743196 |
| 10 | -1.06492259 | -0.12259338 |
Claims (2)
1. the dual field-of-view infrared optical system containing aspheric surface trousers, it is characterised in that: comprise rotational symmetric aspheric altogether
Shape trousers (1), fixed lens group (2), powered optical element distorting lens (3) and detector image planes (4)；The direction of propagation at light
On, conformal trousers and fixed lens group containing rotational symmetric aspheric are perpendicular to horizontal optical axis；And powered optical element becomes
Shape mirror and optical axis are 45 ° of angles；Detector image planes are parallel to horizontal optical axis；The infra-red radiation of infinity objective emission sequentially passes through
It is irradiated on detector element after each optical element, obtains last picture；By controlling the face type of powered optical element distorting lens
Correct the asymmetric aberration brought by aspheric surface trousers different visual field and realize little being recessed into picture.
A kind of dual field-of-view infrared optical system containing aspheric surface trousers the most according to claim 1, it is characterised in that should
The method for designing of system is as follows:
1). the whole conformal recessed infrared optical system design operation wavelength containing distorting lens be 10um-13um, F number be 2, focal length
For 70mm.Optical system front end applications meets the dynamic (dynamical) conformal trousers of medium as protective cover, the rotation applied during design
The draw ratio of the conformal trousers of symmetric aspheres is 1, and the material of application is long wave material zinc sulfide；Subsequent fixed group of optical system
Application is long wave germanite glass.Design Theory maximum angle is 60 °.
2). this structure not only goes for LONG WAVE INFRARED structure during design, can change near-infrared, medium-wave infrared wave band institute
Corresponding material realizes different infrared bands is realized the conformal infrared little effect being recessed into picture containing powered optical element distorting lens
Really.
3). conversion powered optical element distoring mirror type realizes Regional High Resolution, in CODEV design software, goes out in optical system
Add reflective powered optical element distorting lens before and after pupil position, simulated the face of distorting lens by the change of ZERNIKE coefficient
The change of type, distorting lens and horizontal optical axis are 45 degree of angles, and light can produce the deviation of 90 degree through distorting lens；It the most singly can school
The aberration of the most whole optical system, it is also possible to specific objective visual field is carried out high-resolution imaging, effectively reduces image data
Amount, facilitates image transmitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610589974.7A CN106054381B (en) | 2016-07-25 | 2016-07-25 | Conformal small recessed infrared optical system containing distorting lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610589974.7A CN106054381B (en) | 2016-07-25 | 2016-07-25 | Conformal small recessed infrared optical system containing distorting lens |
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| Publication Number | Publication Date |
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| CN106054381A true CN106054381A (en) | 2016-10-26 |
| CN106054381B CN106054381B (en) | 2018-10-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773024A (en) * | 2017-03-30 | 2017-05-31 | 中国检验认证集团检验有限公司 | A kind of change enlargement ratio optical image technology based on distorting lens |
| CN109254392A (en) * | 2018-08-22 | 2019-01-22 | 哈尔滨新光光电科技有限公司 | A kind of miniaturization rolling-backstroke long wave refrigeration optical system |
| US11194129B2 (en) * | 2018-10-31 | 2021-12-07 | Tamron Co., Ltd. | Correction lens and imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6473241B1 (en) * | 2001-11-27 | 2002-10-29 | The United States Of America As Represented By The Secretary Of The Air Force | Wide field-of-view imaging system using a reflective spatial light modulator |
| CN103901615A (en) * | 2014-03-14 | 2014-07-02 | 北京理工大学 | Foveated imaging optical system |
| CN104007559A (en) * | 2014-05-08 | 2014-08-27 | 北京理工大学 | Foveated imaging system with partial super-resolution scanning function |
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2016
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Patent Citations (3)
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| US6473241B1 (en) * | 2001-11-27 | 2002-10-29 | The United States Of America As Represented By The Secretary Of The Air Force | Wide field-of-view imaging system using a reflective spatial light modulator |
| CN103901615A (en) * | 2014-03-14 | 2014-07-02 | 北京理工大学 | Foveated imaging optical system |
| CN104007559A (en) * | 2014-05-08 | 2014-08-27 | 北京理工大学 | Foveated imaging system with partial super-resolution scanning function |
Non-Patent Citations (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773024A (en) * | 2017-03-30 | 2017-05-31 | 中国检验认证集团检验有限公司 | A kind of change enlargement ratio optical image technology based on distorting lens |
| CN109254392A (en) * | 2018-08-22 | 2019-01-22 | 哈尔滨新光光电科技有限公司 | A kind of miniaturization rolling-backstroke long wave refrigeration optical system |
| CN109254392B (en) * | 2018-08-22 | 2019-06-14 | 哈尔滨新光光电科技有限公司 | A kind of miniaturization rolling-backstroke long wave refrigeration optical system |
| US11194129B2 (en) * | 2018-10-31 | 2021-12-07 | Tamron Co., Ltd. | Correction lens and imaging apparatus |
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| Publication number | Publication date |
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| CN106054381B (en) | 2018-10-19 |
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